Opteron 4340 's Advantages
Higher base frequency (3.5GHz vs 3.2GHz)
Lower TDP (95W vs 120W)
Intel Xeon W 2104 's Advantages
Released 4 years and 8 months late
Higher specification of memory (2666 vs 3)
Larger L3 cache size (8.25MB vs 8MB)
More modern manufacturing process (14nm vs 32nm)